U.S. District Judge Vince Chhabria in February dismissed the lawsuit, writing that "while the caddies' overall complaint about poor treatment by the Tour has merit, but this federal lawsuit about bibs does not."

Richard Meadow with the Lanier Law Firm in Houston said caddies earlier this year filed notice of appeal with the 9th U.S. District Court of Appeals in San Francisco and submitted their 66-page appeal brief to the appeals court this week.

Meadow said Chhabria's ruling should be overturned because the judge focused on matters not included in the lawsuit and did not allow the caddies to be heard in response to allegations and assertions that should not have been at issue in the first place.

"He decided to start making his own findings of fact and bringing in intrinsic things ... and then didn't give us an opportunity to be heard on the things he was considering," he said.